and in the u.s., ads like this are everywhere. and companies can't or won't call each other out for making false claims. so, just how do the stars and models in ads achieve those luscious lashes in beauty magazines. we checked in with beauty expert greta monahan, who says fake lashes are the way to go. >> typically, what i need to do if i want a magnified effect, a movie star effect, is to use false lashes and mascara. >> reporter: for "good morning america," paula faris, abc news, new york. >> both companies declined to comment on that ad when we reached out to them. >>> now, the stunning, new book by the prominent doctor that not only claims he went to heaven, but says he can prove it. eben alexander almost died four years ago. now, he has his book, "proof of heaven." >> reporter: eben alexander is a healthy, 58-year-old harvard-trained neurosurgeon. an expert of science. did you go to heaven? >> yes. >> reporter: four years ago, alexander nearly died from a massive brain infection that plunged him into a coma and shut down near